New synapses can form parts of the brain take over a

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New synapses can form Parts of the brain take over a particular function Not in production of new neurons Synaptic plasticity is greatest in infancy But continues throughout life Neuronal Plasticity Teratogens & their effect on developing brains (substance that can cause birth defects if exposure in utero) Neuronal Development Dr. Kelly Huffman-Neal Huffman Lab Studies effects of fetal alcohol exposure on mice & their children & grandchildren (cross-generational changes in genes)
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1/17/19 6 What effect does alcohol have on the developing brain? What effect does radiation have on the developing brain? Video Notes Teratogens & their effect on developing brains (substance that can cause birth defects if exposure in utero) Neuronal Development Teratogen Associated Defects Alcohol (moderate use) Smoking Alcohol (heavy use) Miscarriage, developmental delays, hyperactivity Miscarriage, Fetal Alcohol Syndrome (small head, facial abnormalities, heart defects, learning difficulties, behavioral problems, mental retardation) Cocaine Miscarriage, low birth weight, brain damage, small head, limb abnormalities, gastro-urinary abnormalities, heart defects, infant withdrawal Marijuana Unclear, but may be related to neural tube defects & brain malformation & effects on memory and cognition over childhood Still birth, premature delivery, low birth weight The time in the development of a particular ability when it is most easily acquired Sensitive period Earlier is not necessarily better Critical Period
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1/17/19 7 Write name & SID on top of paper How can critical periods be explained by the combined process of synapse formation and synaptic pruning? In-Class Quiz Evolutionary Theory 1. More species members are born in each generation than will survive 2. All members of a species have different combinations of inherited traits (variation) 3. Environmental conditions cause some members of species to survive & reproduce and other members not (natural selection) 4. Inherited traits of survivors are passed onto next generation 5. Over many generations, inherited traits of survivors will be passed on & traits of non-survivors will not 6. Reproductive fitness: likelihood that an individual will become a parent or grandparent What does this mean for understanding cognitive development?
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